C# implements the method of generating non-repeated order numbers in the shopping cart system

This article describes the method of C# to generate non-repeated order numbers in the shopping cart system. Share it for your reference. The specific analysis is as follows:

The order number plays a good role in identifying products during shopping, and is more convenient for staff to identify products. The code is as follows:

#region Generate document number/// &lt;summary&gt;
/// Generate document number/// &lt;/summary&gt;
/// &lt;param name="pFromType"&gt;&lt;/param&gt;
/// &lt;returns&gt;&lt;/returns&gt;
public static string GetFormCode(FormType pFromType)
{
 string formcode = "";
 switch(pFromType)
 {
 case :
 {
  formcode = "CG";
  break;
 }
 case :
 {
  formcode = "CX";
  break;
 }
 case :
 {
  formcode = "CK";
  break;
 }
 case :
 {
  formcode = "LL";
  break;
 }
 case :
 {
  formcode = "PC";
  break;
 }
 case :
 {
  formcode = "RK";
  break;
 }
 case :
 {
  formcode = "SC";
  break;
 }
 case :
 {
  formcode = "SY";
  break;
 }
 case :
 {
  formcode = "TH";
  break;
 }
 case :
 {
  formcode = "XS";
  break;
 }
 case :
 {
  formcode = "PS";
  break;
 }
 case :
 {
  formcode = "ZP";
  break;
 }
 case :
 {
  formcode = "FK";
  break;
 }
 case :
 {
  formcode = "SK";
  break;
 }
 }
 formcode += ();
 formcode += ().Length == 1?"0" + () : ();
 formcode += ().Length == 1?"0" + () : ();
 formcode += ().Length == 1?"0" + () : ();
 formcode += ().Length == 1?"0" + () : ();
 formcode += ().Length == 1?"0" + () : ();
 if(().Length == 1)
 {
  formcode += "00" + ();
 }
 else if (().Length == 2)
 {
  formcode += "0" + ();
 }
 else
 {
  formcode += ();
 }
 return formcode;
}
#endregion

I hope this article will be helpful to everyone's C# programming.